原帖由 stupid818 於 2008-4-17 11:42 PM 發表 
; F6 I: m! z* I: I( X3 Mfirst, compare 6 and another 6. they must have difference.
5 t: W* r! f$ j9 [7 jwww1.tvboxnow.comsecond, divide those 6 heavier one into two, each has 3. u will find difference again.+ {' s* u7 r, \. q1 g, f$ ]
third time, if u put 2 and they are equal, u will kno ... 8 g& [1 g3 E# x7 q0 |+ x6 Q
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but the question has not defined whether the abnormal ball is heavier or ligher than normal ones .... |